Multiple choice

The specific characteristic present in the leaves of C4 plants is the presence of

  1. bulliform cells

  2. parallel venation

  3. dimorphic chloroplasts

  4. stomata which open at night

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

C4 plants possess dimorphic chloroplasts - bundle sheath chloroplasts are larger and lack grana, while mesophyll chloroplasts are smaller with well-developed grana. This Kranz anatomy is an adaptation for efficient carbon fixation. Bulliform cells and parallel venation are general monocot features, while night-opening stomata characterize CAM plants.